xref: /openbmc/linux/scripts/Makefile.clean (revision 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2) 
1# ==========================================================================
2# Cleaning up
3# ==========================================================================
4
5src := $(obj)
6
7.PHONY: __clean
8__clean:
9
10include $(if $(wildcard $(obj)/Kbuild), $(obj)/Kbuild, $(obj)/Makefile)
11
12# Figure out what we need to build from the various variables
13# ==========================================================================
14
15__subdir-y	:= $(patsubst %/,%,$(filter %/, $(obj-y)))
16subdir-y	+= $(__subdir-y)
17__subdir-m	:= $(patsubst %/,%,$(filter %/, $(obj-m)))
18subdir-m	+= $(__subdir-m)
19__subdir-n	:= $(patsubst %/,%,$(filter %/, $(obj-n)))
20subdir-n	+= $(__subdir-n)
21__subdir-	:= $(patsubst %/,%,$(filter %/, $(obj-)))
22subdir-		+= $(__subdir-)
23
24# Subdirectories we need to descend into
25
26subdir-ym	:= $(sort $(subdir-y) $(subdir-m))
27subdir-ymn      := $(sort $(subdir-ym) $(subdir-n) $(subdir-))
28
29# Add subdir path
30
31subdir-ymn	:= $(addprefix $(obj)/,$(subdir-ymn))
32
33# build a list of files to remove, usually releative to the current
34# directory
35
36__clean-files	:= $(extra-y) $(EXTRA_TARGETS) $(always) \
37		   $(targets) $(clean-files)             \
38		   $(host-progs)                         \
39		   $(hostprogs-y) $(hostprogs-m) $(hostprogs-)
40
41# as clean-files is given relative to the current directory, this adds
42# a $(obj) prefix, except for absolute paths
43
44__clean-files   := $(wildcard                                               \
45                   $(addprefix $(obj)/, $(filter-out /%, $(__clean-files))) \
46		   $(filter /%, $(__clean-files)))
47
48# as clean-dirs is given relative to the current directory, this adds
49# a $(obj) prefix, except for absolute paths
50
51__clean-dirs    := $(wildcard                                               \
52                   $(addprefix $(obj)/, $(filter-out /%, $(clean-dirs)))    \
53		   $(filter /%, $(clean-dirs)))
54
55# ==========================================================================
56
57quiet_cmd_clean    = CLEAN   $(obj)
58      cmd_clean    = rm -f $(__clean-files)
59quiet_cmd_cleandir = CLEAN   $(__clean-dirs)
60      cmd_cleandir = rm -rf $(__clean-dirs)
61
62
63__clean: $(subdir-ymn)
64ifneq ($(strip $(__clean-files)),)
65	+$(call cmd,clean)
66endif
67ifneq ($(strip $(__clean-dirs)),)
68	+$(call cmd,cleandir)
69endif
70ifneq ($(strip $(clean-rule)),)
71	+$(clean-rule)
72endif
73	@:
74
75
76# ===========================================================================
77# Generic stuff
78# ===========================================================================
79
80# Descending
81# ---------------------------------------------------------------------------
82
83.PHONY: $(subdir-ymn)
84$(subdir-ymn):
85	$(Q)$(MAKE) $(clean)=$@
86
87# If quiet is set, only print short version of command
88
89cmd = @$(if $($(quiet)cmd_$(1)),echo '  $($(quiet)cmd_$(1))' &&) $(cmd_$(1))
90
91# Shorthand for $(Q)$(MAKE) scripts/Makefile.clean obj=dir
92# Usage:
93# $(Q)$(MAKE) $(clean)=dir
94clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
95